Smeg WO-01 - Manual (Page 17)

- 43 -
B) Osmosis-treated water not produced
Possible
causes
Subcause Solution
Display
alarm
message
Check power supply and power switch ON
(see “Positioning and installation”)
No electrical power
Power plug not inserted in electrical panel
(insert)
Check connections and whether board is
sending a signal
No power to pump
Pump condenser faulty (replace)
Intake pressure switch faulty (jammed on full)
Replace, or adjust the pressure with the
adjuster screw (fig.5)
Vat level switch (low) faulty (jammed on full)
Max level switch faulty, does not send
production enable signal (replace/clean)
(see wiring diagram)
none
No water supply or supply pressure/flow
inadequate
- Supply cock closed OPEN;
- Supply filter blocked CLEAN
- Supply pressure should be > 1.5 bar
- Pre-filter up/downstream cocks closed
OPEN (see maintenance section)
- Filter blocked – REPLACE (fig.5)
- Filler solenoid valve faulty or no power –
REPLACE IF FAULTY (fig.5)
- Intake pressure switch faulty (jammed on
empty) – REPLACE (fig.5)
Low pressure
Osmosis pump
not running
Water in vat
Vat level switch (high) faulty, does not
switch to full: continues producing with
overflow. REPLACE (see wiring diagram) Flooding
alarm
Water supply too cold (<10°) Increase supply temperature
Pre-filter blocked
Replace pre-filter (see maintenance
section)
Membranes blocked
Replace membranes (see maintenance
section)
Impeller damaged/broken
Check pressure gauge reading
if > 8, replace pump or impeller as
required
Bypass valves need adjustment See special adjustments section
Discharge pipe crimped Route pipe properly
Osmosis pump
running but
production low
Pressure drop in vat supply hoses
Shut off power, dry thoroughly and repair
leak